Flow through cell assembly

摘要

There is disclosed a flow through cell assembly that is particularly useful for housing of the sensing cathode of a dissolved oxygen cell. The flow through cell assembly supports the cathode of the dissolved oxygen cell adjacent the upper surface of a through passageway receiving flow of the liquid under investigation and includes a transversely positioned second probe that substantially blocks flow through the through passageway and provides an orifice area of restricted dimensions immediately beneath the dissolved oxygen probe. The dissolved oxygen probe is positioned substantially coplanar with the upper surface of the through passageway to avoid the formation of any air or gas pockets in the flow passageway which could cause erroneous indications on the dissolved oxygen probe. This also allows a high flow velocity across the sensor tip which permits lower volumetric flow rates and a proportionally greater sensitivity of continuous respirometer instrument utilizing the flow through cell assemblies.